PLPA 2003 FINAL EXAM QUESTIONS WITH VERIFIED
ACCURATE ANSWERS
Fungi - Answers - what biotic disease causes the most damage to plants
Environment, Host, Pathogen - Answers - what 3 components are required for disease
to occur
Immune system - Answers - what do plants lack that humans have
Neolithic revolution - Answers - what caused increased plant disease, dispersal
gradient, plant density, lowered plant diversity and irrigation
Theophrastus - Answers - who was the father of botany
Coffee rust - Answers - what is a fungal pathogen that causes severe defoliation even
death, devastated production in Sri Lanka and is the reason why English drink tea
Tulipmania - Answers - in this period there were people paying lots of money in hope to
resell these flowers due to their beautiful color variation, occurred in the Netherlands
Anton De Bary - Answers - who is the father of Plant Pathology and inoculated potatoes
Chemical control - Answers - Pierre Marie Alexis Millardet discovered what relating to
grapes, developed a solution of copper sulfate, lime and water (Bordeaux Mixture), still
used widely today
Stem Rust - Answers - this fungal pathogen affects wheat and has a narrow host range,
thrives well in wet climates, requires 2 different plant species to complete sexual life
cycle, plants can host thousands of pustules, each containing thousands of spores to be
dispersed through air currents
Robigus - Answers - The Roman Rust God
Robigalla - Answers - This celebration was used to bless the forthcoming growing
seasons and protect the crop, rust colored dogs were sacrificed
Elvin Stakman - Answers - this man worked with trying to understand the stem rust
pathogen but resistance could not be met due to genetic variation
Harold Flor - Answers - this man proposed gene to gene concept, allowed plant to
detect presence of pathogen, controlled death of attacked plant cell, prevents
spreading, was only effective against biotrophic pathogens
ACCURATE ANSWERS
Fungi - Answers - what biotic disease causes the most damage to plants
Environment, Host, Pathogen - Answers - what 3 components are required for disease
to occur
Immune system - Answers - what do plants lack that humans have
Neolithic revolution - Answers - what caused increased plant disease, dispersal
gradient, plant density, lowered plant diversity and irrigation
Theophrastus - Answers - who was the father of botany
Coffee rust - Answers - what is a fungal pathogen that causes severe defoliation even
death, devastated production in Sri Lanka and is the reason why English drink tea
Tulipmania - Answers - in this period there were people paying lots of money in hope to
resell these flowers due to their beautiful color variation, occurred in the Netherlands
Anton De Bary - Answers - who is the father of Plant Pathology and inoculated potatoes
Chemical control - Answers - Pierre Marie Alexis Millardet discovered what relating to
grapes, developed a solution of copper sulfate, lime and water (Bordeaux Mixture), still
used widely today
Stem Rust - Answers - this fungal pathogen affects wheat and has a narrow host range,
thrives well in wet climates, requires 2 different plant species to complete sexual life
cycle, plants can host thousands of pustules, each containing thousands of spores to be
dispersed through air currents
Robigus - Answers - The Roman Rust God
Robigalla - Answers - This celebration was used to bless the forthcoming growing
seasons and protect the crop, rust colored dogs were sacrificed
Elvin Stakman - Answers - this man worked with trying to understand the stem rust
pathogen but resistance could not be met due to genetic variation
Harold Flor - Answers - this man proposed gene to gene concept, allowed plant to
detect presence of pathogen, controlled death of attacked plant cell, prevents
spreading, was only effective against biotrophic pathogens
